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Acquisitions (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended	12 Months Ended	0 Months Ended		12 Months Ended
	Apr. 03, 2013	Dec. 31, 2013	Jan. 10, 2013	May 03, 2013	Dec. 31, 2014	Dec. 31, 2012	Jan. 31, 2013
Business Acquisition [Line Items]
Goodwill		$ 1,736,092us-gaap_Goodwill			$ 1,604,352us-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	901,773us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred / us-gaap_BusinessAcquisitionAxis = mhk_MarrazziGroupMember
Cash payments to acquire entity	307,052us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = mhk_MarrazziGroupMember
Shares issued for acquisition, in shares	2,874us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = mhk_MarrazziGroupMember
Shares issued for acquisition, value	313,906us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / us-gaap_BusinessAcquisitionAxis = mhk_MarrazziGroupMember
Acquisition related costs		15,660us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_BusinessAcquisitionAxis = mhk_MarrazziGroupMember
Goodwill	276,586us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = mhk_MarrazziGroupMember
Inventory step up, amortization		31,041mhk_BusinessCombinationInventoryFairValueStepUpAmortization / us-gaap_BusinessAcquisitionAxis = mhk_MarrazziGroupMember
Pergo [Member]
Business Acquisition [Line Items]
Enterprise value			145,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = mhk_PergoMember
Intangible assets subject to amortization			15,188mhk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedFiniteLivedIntangibles / us-gaap_BusinessAcquisitionAxis = mhk_PergoMember
Goodwill			18,456us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = mhk_PergoMember
Spano Invest NV [Member]
Business Acquisition [Line Items]
Enterprise value				160,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = mhk_SpanoInvestNvMember
Goodwill				37,739us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = mhk_SpanoInvestNvMember
3.85% Senior Notes Due February 1,2023 [Member]
Business Acquisition [Line Items]
Interest rate percentage					3.85%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = mhk_ThreePointEightFivePercentSeniorNotesDueFebruaryOneTwoThousandTwentyThreeMember		3.85%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = mhk_ThreePointEightFivePercentSeniorNotesDueFebruaryOneTwoThousandTwentyThreeMember
Customer Relationships [Member] | Marrazzi Group [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization	21,792mhk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedFiniteLivedIntangibles / us-gaap_BusinessAcquisitionAxis = mhk_MarrazziGroupMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Intangible assets subject to amortization, useful life	10 years
Trademarks [Member] | Marrazzi Group [Member]
Business Acquisition [Line Items]
Tradenames	215,357us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets / us-gaap_BusinessAcquisitionAxis = mhk_MarrazziGroupMember / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember
Trademarks [Member] | Pergo [Member]
Business Acquisition [Line Items]
Tradenames			16,834us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets / us-gaap_BusinessAcquisitionAxis = mhk_PergoMember / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember
Selling, General and Administrative Expenses [Member]
Business Acquisition [Line Items]
Acquisition related costs		14,199us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_IncomeStatementLocationAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember			0us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_IncomeStatementLocationAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember	0us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_IncomeStatementLocationAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember
Selling, General and Administrative Expenses [Member] | Marrazzi Group [Member]
Business Acquisition [Line Items]
Acquisition related costs		14,199us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_BusinessAcquisitionAxis = mhk_MarrazziGroupMember / us-gaap_IncomeStatementLocationAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember
Other Expense [Member] | Marrazzi Group [Member]
Business Acquisition [Line Items]
Acquisition related costs		$ 1,461us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_BusinessAcquisitionAxis = mhk_MarrazziGroupMember / us-gaap_IncomeStatementLocationAxis = us-gaap_OtherExpenseMember

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