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Goodwill and intangible assets (Schedule of goodwill) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Apr. 04, 2015
Goodwill [Roll Forward] |
Goodwill, gross, beginning balance | $ 2,931,777us-gaap_GoodwillGross
Accumulated impairment losses | (1,327,425)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
Goodwill, net, beginning balance | 1,604,352us-gaap_Goodwill
Goodwill recognized or adjusted during the period | 2,659us-gaap_GoodwillAcquiredDuringPeriod
Currency translation during the year | (53,856)us-gaap_GoodwillTranslationAdjustments
Goodwill, gross, ending balance | 2,880,580us-gaap_GoodwillGross
Accumulated impairment losses | (1,327,425)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
Goodwill, net, ending balance | 1,553,155us-gaap_Goodwill
Carpet Segment [Member] |
Goodwill [Roll Forward] |
Goodwill, gross, beginning balance | 199,132us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = mhk_CarpetSegmentMember
Accumulated impairment losses | (199,132)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = mhk_CarpetSegmentMember
Goodwill, net, beginning balance | 0us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = mhk_CarpetSegmentMember
Goodwill recognized or adjusted during the period | 0us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = mhk_CarpetSegmentMember
Currency translation during the year | 0us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = mhk_CarpetSegmentMember
Goodwill, gross, ending balance | 199,132us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = mhk_CarpetSegmentMember
Accumulated impairment losses | (199,132)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = mhk_CarpetSegmentMember
Goodwill, net, ending balance | 0us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = mhk_CarpetSegmentMember
Ceramic Segment [Member] |
Goodwill [Roll Forward] |
Goodwill, gross, beginning balance | 1,395,132us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = mhk_CeramicSegmentMember
Accumulated impairment losses | (531,930)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = mhk_CeramicSegmentMember
Goodwill, net, beginning balance | 863,202us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = mhk_CeramicSegmentMember
Goodwill recognized or adjusted during the period | 0us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = mhk_CeramicSegmentMember
Currency translation during the year | (1,185)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = mhk_CeramicSegmentMember
Goodwill, gross, ending balance | 1,393,947us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = mhk_CeramicSegmentMember
Accumulated impairment losses | (531,930)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = mhk_CeramicSegmentMember
Goodwill, net, ending balance | 862,017us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = mhk_CeramicSegmentMember
Laminate and Wood Segment [Member] |
Goodwill [Roll Forward] |
Goodwill, gross, beginning balance | 1,337,513us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = mhk_LaminateandWoodSegmentMember
Accumulated impairment losses | (596,363)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = mhk_LaminateandWoodSegmentMember
Goodwill, net, beginning balance | 741,150us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = mhk_LaminateandWoodSegmentMember
Goodwill recognized or adjusted during the period | 2,659us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = mhk_LaminateandWoodSegmentMember
Currency translation during the year | (52,671)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = mhk_LaminateandWoodSegmentMember
Goodwill, gross, ending balance | 1,287,501us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = mhk_LaminateandWoodSegmentMember
Accumulated impairment losses | (596,363)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = mhk_LaminateandWoodSegmentMember
Goodwill, net, ending balance | $ 691,138us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = mhk_LaminateandWoodSegmentMember

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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