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

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
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Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_LongtermDebtTypeAxis=mhk_ThreePointEightFivePercentSeniorNotesDueFebruaryOneTwoThousandTwentyThreeMember
Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_VariableRateAxis=mhk_EuroInterbankOfferedRateEURIBORMember
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Period Type:

Debt - Senior Notes (Details)				3 Months Ended
Debt - Senior Notes (Details)	Sep. 11, 2017 USD ($)	Jun. 09, 2015 USD ($)	Jan. 31, 2013 USD ($)	Mar. 31, 2018 USD ($)	Apr. 01, 2017 USD ($)	Sep. 11, 2017 EUR (€)	Jun. 09, 2015 EUR (€)
Debt Instrument [Line Items]
Payment of financing costs				$ 0	$ 522,000
Floating Rate Notes due September 11, 2019
Debt Instrument [Line Items]
Aggregate principal amount of debts \| €						€ 300,000,000
Payment of financing costs	$ 911,000
2.00% Senior Notes due January 14, 2022
Debt Instrument [Line Items]
Aggregate principal amount of debts \| €							€ 500,000,000
Payment of financing costs		$ 4,218,000
Interest rate percentage				2.00%			2.00%
3.85% Senior Notes due February 1, 2023
Debt Instrument [Line Items]
Aggregate principal amount of debts			$ 600,000,000
Payment of financing costs			$ 6,000,000
Interest rate percentage			3.85%	3.85%
Euro Interbank Offered Rate (EURIBOR) \| Floating Rate Notes due September 11, 2019
Debt Instrument [Line Items]
Basis spread on debt instrument	0.30%