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Business Combinations - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 3 Months Ended
Dec. 31, 2014
Mar. 31, 2014
Dec. 31, 2013
Business Acquisition [Line Items]      
Aggregate consideration for acquisitions $ 27,005us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired    
Business acquisitions goodwill amount 540,621us-gaap_Goodwill   895,518us-gaap_Goodwill
TalentBin, Inc and Gozaik LLC Acquisition      
Business Acquisition [Line Items]      
Aggregate consideration for acquisitions   27,005us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ us-gaap_BusinessAcquisitionAxis
= mww_TalentBinIncAndGozaikLlcAcquisitionMember
 
Consideration in escrow accounts   1,750mww_EscrowDepositRelatedToBusinessAcquisition
/ us-gaap_BusinessAcquisitionAxis
= mww_TalentBinIncAndGozaikLlcAcquisitionMember
 
Business acquisitions goodwill amount   25,061us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= mww_TalentBinIncAndGozaikLlcAcquisitionMember
 
Business acquisitions deferred tax assets   907us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssetsNoncurrent
/ us-gaap_BusinessAcquisitionAxis
= mww_TalentBinIncAndGozaikLlcAcquisitionMember
 
Business acquisitions purchased technology   1,740us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= mww_TalentBinIncAndGozaikLlcAcquisitionMember
 
Business acquisitions other intangibles   730us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
/ us-gaap_BusinessAcquisitionAxis
= mww_TalentBinIncAndGozaikLlcAcquisitionMember
 
Business acquisitions other assets   249us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
/ us-gaap_BusinessAcquisitionAxis
= mww_TalentBinIncAndGozaikLlcAcquisitionMember
 
Business acquisitions liabilities   1,482us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
/ us-gaap_BusinessAcquisitionAxis
= mww_TalentBinIncAndGozaikLlcAcquisitionMember
 
Goodwill deductible for tax purposes   $ 10,500us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount
/ us-gaap_BusinessAcquisitionAxis
= mww_TalentBinIncAndGozaikLlcAcquisitionMember