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Acquisitions (Assets Acquired and Liabilities Assumed) (Details) (USD $)
In Thousands, unless otherwise specified
0 Months Ended
Apr. 03, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Business Acquisition [Line Items]        
Goodwill   $ 1,604,352us-gaap_Goodwill $ 1,736,092us-gaap_Goodwill $ 1,385,771us-gaap_Goodwill
Marrazzi Group [Member]        
Business Acquisition [Line Items]        
Enterprise value 1,522,731us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= mhk_MarrazziGroupMember
     
Assumed indebtedness (901,773)us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred
/ us-gaap_BusinessAcquisitionAxis
= mhk_MarrazziGroupMember
     
Consideration transferred 620,958mhk_BusinessCombinationConsiderationTransferredCashandEquityInterestsIssued
/ us-gaap_BusinessAcquisitionAxis
= mhk_MarrazziGroupMember
     
Working capital 428,624mhk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsWorkingCapital
/ us-gaap_BusinessAcquisitionAxis
= mhk_MarrazziGroupMember
     
Property, plant and equipment, net 773,594us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= mhk_MarrazziGroupMember
     
Equity method investments 32mhk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedEquityMethodInvestments
/ us-gaap_BusinessAcquisitionAxis
= mhk_MarrazziGroupMember
     
Goodwill 276,586us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= mhk_MarrazziGroupMember
     
Other long-term assets 18,499us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
/ us-gaap_BusinessAcquisitionAxis
= mhk_MarrazziGroupMember
     
Long-term debt, including current portion (901,773)mhk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedLongtermDebt
/ us-gaap_BusinessAcquisitionAxis
= mhk_MarrazziGroupMember
     
Other long-term liabilities (70,090)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther
/ us-gaap_BusinessAcquisitionAxis
= mhk_MarrazziGroupMember
     
Deferred tax liability (135,455)mhk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedDeferredTaxLiabilities
/ us-gaap_BusinessAcquisitionAxis
= mhk_MarrazziGroupMember
     
Noncontrolling interest (6,208)us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue
/ us-gaap_BusinessAcquisitionAxis
= mhk_MarrazziGroupMember
     
Consideration transferred 620,958us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= mhk_MarrazziGroupMember
     
Marrazzi Group [Member] | Customer Relationships [Member]        
Business Acquisition [Line Items]        
Customer relationships 21,792mhk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedFiniteLivedIntangibles
/ us-gaap_BusinessAcquisitionAxis
= mhk_MarrazziGroupMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
     
Marrazzi Group [Member] | Trademarks [Member]        
Business Acquisition [Line Items]        
Tradenames $ 215,357us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets
/ us-gaap_BusinessAcquisitionAxis
= mhk_MarrazziGroupMember
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TrademarksMember