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Summary Of Significant Accounting Policies (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Significant Accounting Policies [Line Items] |  |  |  |
Cash and cash equivalents | $ 97,877 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 54,066 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 477,672 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 311,945 us-gaap_CashAndCashEquivalentsAtCarryingValue
Advertising and promotion expenses | 45,487 us-gaap_AdvertisingExpense | 42,627 us-gaap_AdvertisingExpense | 29,175 us-gaap_AdvertisingExpense |
Co-op advertising expenses | 4,826 us-gaap_CooperativeAdvertisingExpense | 4,307 us-gaap_CooperativeAdvertisingExpense | 6,424 us-gaap_CooperativeAdvertisingExpense |
Securities excluded from computation of earnings per share amount | 0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 891 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount |
Non-US [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Cash and cash equivalents | $ 76,771 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementGeographicalAxis = mhk_NonUsMember | $ 31,278 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementGeographicalAxis = mhk_NonUsMember |  |
Minimum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Finite intangible assets useful life, minimum (years) | 7 years |  |  |
Minimum [Member] | Buildings And Improvements [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives of property, plant and equipment, minimum (years) | 25 years |  |  |
Minimum [Member] | Machinery and equipment [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives of property, plant and equipment, minimum (years) | 5 years |  |  |
Minimum [Member] | Furniture and fixtures [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives of property, plant and equipment, minimum (years) | 3 years |  |  |
Maximum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Finite intangible assets useful life, minimum (years) | 16 years |  |  |
Maximum [Member] | Buildings And Improvements [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives of property, plant and equipment, minimum (years) | 35 years |  |  |
Maximum [Member] | Machinery and equipment [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives of property, plant and equipment, minimum (years) | 15 years |  |  |
Maximum [Member] | Furniture and fixtures [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives of property, plant and equipment, minimum (years) | 7 years |  |  |

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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