Consolidated interest coverage ratio

No definition available.

Name:	mhk_ConsolidatedInterestCoverageRatio
Namespace Prefix:	mhk_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Consolidated net leverage ratio

+ References

No definition available.

+ Details

Name:	mhk_ConsolidatedNetLeverageRatio
Namespace Prefix:	mhk_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of Credit Facility, Additional Maturity Period Extended

+ References

No definition available.

+ Details

Name:	mhk_LineofCreditFacilityAdditionalMaturityPeriodExtended
Namespace Prefix:	mhk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13)(2))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a)(3))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_CommercialPaper
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

+ Details

Name:	us-gaap_UnamortizedDebtIssuanceExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	srt_StatementGeographicalAxis=srt_EuropeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=mhk_A2019SeniorSecuredCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_BorrowingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=mhk_StandbyLettersOfCreditRelatedToVariousInsuranceContractsAndForeignVendorCommitmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_FederalFundsEffectiveSwapRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=mhk_MonthlyLiborMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=mhk_A2019SeniorSecuredCreditFacilityAmendmentMaturingOctober182024Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt - Senior Credit Facility (Details)		6 Months Ended
Debt - Senior Credit Facility (Details)	Oct. 18, 2019 USD ($)	Jul. 03, 2021 USD ($)	Dec. 31, 2020 USD ($)	May 07, 2020	Dec. 31, 2019 USD ($)
Europe \| Carrying value
Line of Credit Facility [Line Items]
Commercial paper		$ 0	$ 0
2019 senior secured credit facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity under credit facility	$ 1,800,000,000
Additional maturity period extended	1 year
Commitment fee percentage		0.11%
Unamortized financing costs	$ 3,405,000
Utilized borrowings under credit facility		$ 787,000
Available amount under credit facility		1,799,213,000
2019 senior secured credit facility \| Borrowings
Line of Credit Facility [Line Items]
Utilized borrowings under credit facility		0	0
2019 senior secured credit facility \| Standby letters of credit
Line of Credit Facility [Line Items]
Utilized borrowings under credit facility		$ 787,000	$ 787,000
2019 senior secured credit facility \| Minimum
Line of Credit Facility [Line Items]
Commitment fee percentage	0.09%
Consolidated interest coverage ratio, at least	3.00
2019 senior secured credit facility \| Maximum
Line of Credit Facility [Line Items]
Commitment fee percentage	0.20%
Consolidated net leverage ratio, no more than	3.75			4.75
2019 senior secured credit facility \| London interbank offered rate (LIBOR)
Line of Credit Facility [Line Items]
Basis spread on debt instrument		1.125%
2019 senior secured credit facility \| London interbank offered rate (LIBOR) \| Minimum
Line of Credit Facility [Line Items]
Basis spread on debt instrument	1.00%
2019 senior secured credit facility \| London interbank offered rate (LIBOR) \| Maximum
Line of Credit Facility [Line Items]
Basis spread on debt instrument	1.75%
2019 senior secured credit facility \| Federal funds
Line of Credit Facility [Line Items]
Basis spread on debt instrument	0.50%
2019 senior secured credit facility \| Monthly LIBOR
Line of Credit Facility [Line Items]
Basis spread on debt instrument	1.00%	0.125%
2019 senior secured credit facility \| Monthly LIBOR \| Minimum
Line of Credit Facility [Line Items]
Basis spread on debt instrument	0.00%
2019 senior secured credit facility \| Monthly LIBOR \| Maximum
Line of Credit Facility [Line Items]
Basis spread on debt instrument	0.75%
2019 senior secured credit facility amendment, maturing October 18, 2024
Line of Credit Facility [Line Items]
Unamortized financing costs					$ 2,264,000