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Long-Term Debt (Accounts Receivable Securitization) (Details) (Secured Credit Facility [Member], USD $) | 0 Months Ended |  |
--- | --- | --- | ---
Sep. 11, 2014 | Dec. 19, 2012 | Dec. 31, 2014 | Dec. 31, 2013
Line of Credit Facility [Line Items] |  |  |  |
Term of line of credit (years) |  | 3 years |  |
Securitization agreement, maximum borrowing capacity | $ 500,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity | $ 300,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity |  |
Basis spread on securitization agreement | 0.70%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 |  |  |
Commitment fee percentage on unused amount of each lender's commitment | 0.35%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage |  |  |
Carrying Value [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Securitization facility |  |  | $ 500,000,000 us-gaap_LinesOfCreditFairValueDisclosure / us-gaap_CreditFacilityAxis = mhk_SecuredCreditFacilityMember / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_CarryingReportedAmountFairValueDisclosureMember | $ 300,000,000 us-gaap_LinesOfCreditFairValueDisclosure / us-gaap_CreditFacilityAxis = mhk_SecuredCreditFacilityMember / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_CarryingReportedAmountFairValueDisclosureMember

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- Definition Term of line of credit. + References No definition available. + Details
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Namespace Prefix: | mhk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Fair value portion of contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Line-of-Credit Arrangement -URI http://asc.fasb.org/extlink&oid=6517033 + Details
Name: | us-gaap_LinesOfCreditFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |