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v2.4.1.9

Shareholders' Equity (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2015 | Dec. 31, 2014 | Apr. 28, 2015
Components of Accumulated Other Comprehensive Income [Abstract] |  |  |
Foreign currency translation | (182.5)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax | $ (26.4)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax |
Translation gain (loss) on net investment hedge, net of income taxes of $0.5 and $(16.4), respectively | 5.6 us-gaap_TranslationAdjustmentForNetInvestmentHedgeNetOfTax | (24.5)us-gaap_TranslationAdjustmentForNetInvestmentHedgeNetOfTax |
Translation loss on long-term intercompany loans | (69.3)us-gaap_IntercompanyForeignCurrencyBalanceAmount | (73.4)us-gaap_IntercompanyForeignCurrencyBalanceAmount |
Unrealized gain on investments, net of income taxes of $4.1 and $3.7, respectively | 18.4 us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax | 16.7 us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax |
Accumulated other comprehensive loss | (274.8)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax | (155.2)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax |
Translation gain (loss) on net investment hedge, tax | 0.5 man_AccumulatedOtherComprehensiveIncomeTranslationGainLossOnNetInvestmentHedgeTax | (16.4)man_AccumulatedOtherComprehensiveIncomeTranslationGainLossOnNetInvestmentHedgeTax |
Unrealized gain on investments, tax | 4.1 man_AccumulatedOtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax | 3.7 man_AccumulatedOtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax |
Subsequent Event [Member] | Dividend Declared 2015 Q2 [Member] |  |  |
Dividends Payable [Line Items] |  |  |
Dividend declaration date | Apr. 28, 2015 |  |
Dividend declared (in dollars per share) |  |  | $ 0.80 us-gaap_DividendsPayableAmountPerShare / us-gaap_DividendsAxis = us-gaap_DividendDeclaredMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Dividends payable, date paid | Jun. 15, 2015 |  |
Dividends payable, date of record | Jun. 01, 2015 |  |
Defined Benefit Pension Plans [Member] |  |  |
Components of Accumulated Other Comprehensive Income [Abstract] |  |  |
Defined benefit plans, net of income taxes | (51.4)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | (52.1)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
Defined benefit plans, tax | (29.8)man_AccuulatedOtherComprehensiveIncomeDefinedBenefitPlansTax / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | (30.1)man_AccuulatedOtherComprehensiveIncomeDefinedBenefitPlansTax / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
Retiree Health Care Plan [Member] |  |  |
Components of Accumulated Other Comprehensive Income [Abstract] |  |  |
Defined benefit plans, net of income taxes | 4.4 us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_DefinedBenefitPostretirementHealthCoverageMember | 4.5 us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_DefinedBenefitPostretirementHealthCoverageMember |
Defined benefit plans, tax | 2.3 man_AccuulatedOtherComprehensiveIncomeDefinedBenefitPlansTax / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_DefinedBenefitPostretirementHealthCoverageMember | $ 2.4 man_AccuulatedOtherComprehensiveIncomeDefinedBenefitPlansTax / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_DefinedBenefitPostretirementHealthCoverageMember |

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