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Goodwill and Other Intangible Assets (Schedule of indefinite life assets not subject to amortization) (Details) - Tradenames - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Indefinite-lived Intangible Assets [Roll Forward] |  |
Indefinite life assets not subject to amortization, beginning balance | $ 707,380 | $ 644,208
Intangible assets acquired during the year(1) |  | 91,782
Currency translation during the year | (3,774) | (28,610)
Intangible assets acquired during the year | (874) |
Indefinite life assets not subject to amortization, ending balance | $ 702,732 | $ 707,380

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- Definition Indefinite-lived Intangible Assets, Including Purchase Accounting Adjustments + References No definition available. + Details
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Namespace Prefix: | mhk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of increase (decrease) of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit, from foreign currency translation and purchase accounting adjustments. + References No definition available. + Details
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- Definition Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, from an acquisition. + References No definition available. + Details
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- Details
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