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Employee Benefit Plans (Assumptions Used To Determine The Projected Benefit Obligation For The Non-U.S. Plans) (Details) | Dec. 31, 2014 | Dec. 31, 2013
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Defined Benefit Plan Disclosure [Line Items] |  |
Discount rate | 2.25%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate | 3.50%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
Underlying inflation rate | 1.80%mhk_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationUnderlyingInflationRate | 2.00%mhk_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationUnderlyingInflationRate
Minimum [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Rate of compensation increase | 2.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease / us-gaap_RangeAxis = us-gaap_MinimumMember | 2.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease / us-gaap_RangeAxis = us-gaap_MinimumMember
Maximum [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Rate of compensation increase | 4.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease / us-gaap_RangeAxis = us-gaap_MaximumMember | 4.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease / us-gaap_RangeAxis = us-gaap_MaximumMember

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- Definition Defined benefit plan assumptions used calculating benefit obligation underlying inflation rate. + References No definition available. + Details
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- Definition The interest rate used to adjust for the time value of money for the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition Expected rate of compensation increases (for pay-related plans). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Details
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