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Commitments and Contingencies (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 1 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 21, 2011 claim | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Commitments And Contingencies [Line Items] |  |  |  |
Rent expense under operating leases |  | $ 114,529 us-gaap_OperatingLeasesRentExpenseNet | $ 116,541 us-gaap_OperatingLeasesRentExpenseNet | $ 97,587 us-gaap_OperatingLeasesRentExpenseNet
Number of claims filed | 2 us-gaap_LossContingencyNewClaimsFiledNumber |  |  |
Polyurethane Foam Antitrust Litigation [Member] | Pending Litigation [Member] |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Current damages sought |  | 867,400 us-gaap_LossContingencyDamagesSoughtValue / us-gaap_LitigationCaseAxis = mhk_PolyurethaneFoamAntitrustLitigationMember / us-gaap_LitigationStatusAxis = us-gaap_PendingLitigationMember |  |
Standby Letters of Credit Related to Various Insurance Contracts and Foreign Vendor Commitments [Member] | Senior Secured Credit Facility [Member] |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Standby letters of credit for various insurance contracts and commitments to foreign vendors |  | $ 37,381 us-gaap_LettersOfCreditOutstandingAmount / us-gaap_CreditFacilityAxis = mhk_SeniorSecuredCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = mhk_StandbyLettersOfCreditRelatedToVariousInsuranceContractsAndForeignVendorCommitmentsMember | $ 47,713 us-gaap_LettersOfCreditOutstandingAmount / us-gaap_CreditFacilityAxis = mhk_SeniorSecuredCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = mhk_StandbyLettersOfCreditRelatedToVariousInsuranceContractsAndForeignVendorCommitmentsMember |
Maximum [Member] | Standby Letters of Credit Related to Various Insurance Contracts and Foreign Vendor Commitments [Member] | Senior Secured Credit Facility [Member] |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Expiration period for standby letters of credit |  | 2 years |  |

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- Definition The value (monetary amount) of the award the plaintiff seeks in the legal matter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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