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Restructuring, acquisition and integration-related costs (Restructuring Reserve) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Apr. 04, 2015 | Mar. 29, 2014
Restructuring Reserve [Roll Forward] |  |
Balance as of December 31, 2014 | $ 4,878us-gaap_RestructuringReserve |
Provision | 6,657us-gaap_RestructuringCharges | 4,661us-gaap_RestructuringCharges
Cash payments | (3,184)us-gaap_PaymentsForRestructuring |
Non-cash items | (7,190)us-gaap_RestructuringReserveSettledWithoutCash1 |
Balance as of April 4, 2015 | 5,521us-gaap_RestructuringReserve |
Period in which lease impairments, severance and other restructuring costs are expected to be paid | 4 years |
Lease Impairments [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Balance as of December 31, 2014 | 1,741us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = mhk_LeaseImpairmentsMember |
Cash payments | (1,358)us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = mhk_LeaseImpairmentsMember |
Non-cash items | 0us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_RestructuringCostAndReserveAxis = mhk_LeaseImpairmentsMember |
Balance as of April 4, 2015 | 2,260us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = mhk_LeaseImpairmentsMember |
Asset Write-Down [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Balance as of December 31, 2014 | 0us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = mhk_AssetWriteDownMember |
Cash payments | 0us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = mhk_AssetWriteDownMember |
Non-cash items | (7,785)us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_RestructuringCostAndReserveAxis = mhk_AssetWriteDownMember |
Balance as of April 4, 2015 | 0us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = mhk_AssetWriteDownMember |
Severance [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Balance as of December 31, 2014 | 3,037us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |
Cash payments | (1,256)us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |
Non-cash items | 0us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |
Balance as of April 4, 2015 | 3,112us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |
Other Restructuring [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Balance as of December 31, 2014 | 100us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember |
Cash payments | (570)us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember |
Non-cash items | 595us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember |
Balance as of April 4, 2015 | 149us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember |
Ceramic Segment [Member] | Lease Impairments [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Provision | 0us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = mhk_LeaseImpairmentsMember / us-gaap_StatementBusinessSegmentsAxis = mhk_CeramicSegmentMember |
Operating Segments [Member] | Carpet Segment [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Provision | 4,433us-gaap_RestructuringCharges / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mhk_CarpetSegmentMember |
Operating Segments [Member] | Carpet Segment [Member] | Lease Impairments [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Provision | 1,877us-gaap_RestructuringCharges / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_RestructuringCostAndReserveAxis = mhk_LeaseImpairmentsMember / us-gaap_StatementBusinessSegmentsAxis = mhk_CarpetSegmentMember |
Operating Segments [Member] | Carpet Segment [Member] | Asset Write-Down [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Provision | 2,556us-gaap_RestructuringCharges / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_RestructuringCostAndReserveAxis = mhk_AssetWriteDownMember / us-gaap_StatementBusinessSegmentsAxis = mhk_CarpetSegmentMember |
Operating Segments [Member] | Carpet Segment [Member] | Severance [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Provision | 0us-gaap_RestructuringCharges / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_StatementBusinessSegmentsAxis = mhk_CarpetSegmentMember |
Operating Segments [Member] | Carpet Segment [Member] | Other Restructuring [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Provision | 0us-gaap_RestructuringCharges / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember / us-gaap_StatementBusinessSegmentsAxis = mhk_CarpetSegmentMember |
Operating Segments [Member] | Ceramic Segment [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Provision | 675us-gaap_RestructuringCharges / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mhk_CeramicSegmentMember |
Operating Segments [Member] | Ceramic Segment [Member] | Asset Write-Down [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Provision | 869us-gaap_RestructuringCharges / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_RestructuringCostAndReserveAxis = mhk_AssetWriteDownMember / us-gaap_StatementBusinessSegmentsAxis = mhk_CeramicSegmentMember |
Operating Segments [Member] | Ceramic Segment [Member] | Severance [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Provision | 0us-gaap_RestructuringCharges / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_StatementBusinessSegmentsAxis = mhk_CeramicSegmentMember |
Operating Segments [Member] | Ceramic Segment [Member] | Other Restructuring [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Provision | (194)us-gaap_RestructuringCharges / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember / us-gaap_StatementBusinessSegmentsAxis = mhk_CeramicSegmentMember |
Operating Segments [Member] | Laminate and Wood Segment [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Provision | 5,909us-gaap_RestructuringCharges / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mhk_LaminateandWoodSegmentMember |
Operating Segments [Member] | Laminate and Wood Segment [Member] | Lease Impairments [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Provision | 0us-gaap_RestructuringCharges / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_RestructuringCostAndReserveAxis = mhk_LeaseImpairmentsMember / us-gaap_StatementBusinessSegmentsAxis = mhk_LaminateandWoodSegmentMember |
Operating Segments [Member] | Laminate and Wood Segment [Member] | Asset Write-Down [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Provision | 4,360us-gaap_RestructuringCharges / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_RestructuringCostAndReserveAxis = mhk_AssetWriteDownMember / us-gaap_StatementBusinessSegmentsAxis = mhk_LaminateandWoodSegmentMember |
Operating Segments [Member] | Laminate and Wood Segment [Member] | Severance [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Provision | 1,331us-gaap_RestructuringCharges / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_StatementBusinessSegmentsAxis = mhk_LaminateandWoodSegmentMember |
Operating Segments [Member] | Laminate and Wood Segment [Member] | Other Restructuring [Member] |  |
Restructuring Reserve [Roll Forward] |  |
Provision | $ 218us-gaap_RestructuringCharges / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember / us-gaap_StatementBusinessSegmentsAxis = mhk_LaminateandWoodSegmentMember |

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- Definition Restructuring and Related Costs, Period In Which Costs Are Expected To Be Paid + References No definition available. + Details
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- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Definition Amount of consideration other than cash used to fully or partially settle an accrued restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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